1 | //para.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2011 |
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5 | * The code (may) include prototypes and comments (and maybe |
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6 | * other code fragements) from OpenBSD's sndio. |
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7 | * See 'Copyright for sndio' below for more information on |
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8 | * code fragments taken from OpenBSD's sndio. |
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9 | * |
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10 | * --- Copyright for sndio --- |
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11 | * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org> |
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12 | * |
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13 | * Permission to use, copy, modify, and distribute this software for any |
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14 | * purpose with or without fee is hereby granted, provided that the above |
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15 | * copyright notice and this permission notice appear in all copies. |
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16 | * |
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17 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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18 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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19 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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20 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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21 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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22 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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23 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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24 | * --- End of Copyright for sndio --- |
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25 | * |
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26 | * This file is part of libroaresd a part of RoarAudio, |
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27 | * a cross-platform sound system for both, home and professional use. |
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28 | * See README for details. |
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29 | * |
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30 | * This file is free software; you can redistribute it and/or modify |
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31 | * it under the terms of the GNU General Public License version 3 |
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32 | * as published by the Free Software Foundation. |
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33 | * |
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34 | * RoarAudio is distributed in the hope that it will be useful, |
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35 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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36 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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37 | * GNU General Public License for more details. |
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38 | * |
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39 | * You should have received a copy of the GNU General Public License |
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40 | * along with this software; see the file COPYING. If not, write to |
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41 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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42 | * Boston, MA 02110-1301, USA. |
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43 | * |
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44 | * NOTE for everyone want's to change something and send patches: |
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45 | * read README and HACKING! There a addition information on |
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46 | * the license of this document you need to read before you send |
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47 | * any patches. |
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48 | */ |
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49 | |
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50 | #define ROAR_USE_OWN_SNDIO_HDL |
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51 | #include "libroarsndio.h" |
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52 | |
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53 | //#ifndef DEBUG |
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54 | //#define DEBUG |
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55 | //#endif |
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56 | |
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57 | void sio_initpar(struct sio_par * par) { |
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58 | if ( par == NULL ) |
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59 | return; |
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60 | |
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61 | memset(par, 0, sizeof(struct sio_par)); |
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62 | |
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63 | par->bits = ROAR_BITS_DEFAULT; |
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64 | par->sig = 1; |
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65 | par->le = SIO_LE_NATIVE; |
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66 | par->msb = 1; |
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67 | par->rchan = 0; |
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68 | par->pchan = ROAR_CHANNELS_DEFAULT; |
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69 | par->rate = ROAR_RATE_DEFAULT; |
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70 | par->bufsz = ROAR_BITS_DEFAULT * ROAR_CHANNELS_DEFAULT * ROAR_RATE_DEFAULT / 800.0; |
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71 | par->round = 1; |
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72 | par->xrun = SIO_IGNORE; |
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73 | |
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74 | return; |
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75 | } |
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76 | |
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77 | int sio_setpar (struct sio_hdl * hdl, struct sio_par * par) { |
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78 | if ( hdl == NULL || par == NULL ) { |
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79 | ROAR_DBG("sio_setpar(*): Invalid handle or parameter pointer"); |
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80 | return 0; |
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81 | } |
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82 | |
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83 | if ( par->bits == 0 || par->bits > ROAR_BITS_MAX ) { |
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84 | ROAR_DBG("sio_setpar(*): Invalid number of bits: %i Bit", par->bits); |
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85 | return 0; |
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86 | } |
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87 | |
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88 | if ( par->bps == 0 ) |
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89 | par->bps = SIO_BPS(par->bits); |
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90 | |
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91 | if ( par->bps > ROAR_BITS_MAX/8 ) { |
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92 | ROAR_DBG("sio_setpar(*): Invalid number of bytes: %i Byte", par->bps); |
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93 | return 0; |
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94 | } |
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95 | |
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96 | if ( SIO_BPS(par->bits) > par->bps ) { |
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97 | ROAR_DBG("sio_setpar(*): Number of bits/8 > number of bytes: %i/8 > %i", par->bits, par->bps); |
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98 | return 0; |
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99 | } |
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100 | |
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101 | hdl->info.bits = par->bps * 8; |
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102 | |
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103 | switch ((par->sig << 4) | par->le) { |
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104 | case 0x00: |
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105 | hdl->info.codec = ROAR_CODEC_PCM_U_BE; |
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106 | break; |
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107 | case 0x01: |
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108 | hdl->info.codec = ROAR_CODEC_PCM_U_LE; |
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109 | break; |
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110 | case 0x10: |
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111 | hdl->info.codec = ROAR_CODEC_PCM_S_BE; |
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112 | break; |
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113 | case 0x11: |
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114 | hdl->info.codec = ROAR_CODEC_PCM_S_LE; |
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115 | break; |
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116 | default: |
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117 | ROAR_DBG("sio_setpar(*): Invalid codec: sig=%i, le=%i", par->sig, par->le); |
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118 | return 0; |
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119 | } |
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120 | |
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121 | if ( par->msb == 0 ) { |
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122 | ROAR_DBG("sio_setpar(*): LSM alignment not supported"); |
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123 | return 0; |
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124 | } |
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125 | |
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126 | if ( par->rchan != 0 ) { /* not supported yet */ |
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127 | ROAR_DBG("sio_setpar(*): Recording not supported"); |
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128 | return 0; |
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129 | } |
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130 | |
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131 | if ( par->pchan == 0 || par->pchan > ROAR_MAX_CHANNELS ) { |
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132 | ROAR_DBG("sio_setpar(*): Invalid number of playback channels: %i", par->pchan); |
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133 | return 0; |
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134 | } |
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135 | |
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136 | hdl->info.channels = par->pchan; |
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137 | |
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138 | if ( par->rate == 0 ) { |
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139 | ROAR_DBG("sio_setpar(*): Invalid sample rate: %iHz", par->rate); |
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140 | return 0; |
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141 | } |
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142 | |
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143 | hdl->info.rate = par->rate; |
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144 | |
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145 | if ( par->xrun != SIO_IGNORE ) { |
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146 | ROAR_DBG("sio_setpar(*): Unsupported xrun mode: %i", par->xrun); |
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147 | return 0; |
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148 | } |
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149 | |
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150 | memcpy(&(hdl->para), par, sizeof(struct sio_par)); |
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151 | |
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152 | return 1; |
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153 | } |
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154 | |
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155 | int sio_getpar (struct sio_hdl * hdl, struct sio_par * par) { |
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156 | if ( hdl == NULL || par == NULL ) |
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157 | return 0; |
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158 | |
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159 | memcpy(par, &(hdl->para), sizeof(struct sio_par)); |
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160 | |
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161 | return 1; |
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162 | } |
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163 | |
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164 | int sio_getcap (struct sio_hdl * hdl, struct sio_cap * cap) { |
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165 | struct roar_stream s; |
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166 | unsigned int i; |
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167 | unsigned int bytes; |
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168 | unsigned int sign; |
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169 | unsigned int le; |
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170 | unsigned int mask = 0; |
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171 | |
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172 | if ( cap == NULL ) |
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173 | return 0; |
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174 | |
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175 | if ( roar_server_oinfo2(&(hdl->con), &s, ROAR_DIR_PLAY) == -1 ) |
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176 | return 0; |
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177 | |
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178 | i = 0; |
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179 | for (bytes = 1; bytes <= s.info.bits/8; bytes++) { |
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180 | for (sign = 0; sign < 2; sign++) { |
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181 | for (le = 0; le < 2; le++) { |
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182 | cap->enc[i].bits = 8*bytes; |
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183 | cap->enc[i].bps = bytes; |
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184 | cap->enc[i].sig = sign; |
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185 | cap->enc[i].le = le; |
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186 | cap->enc[i].msb = 1; |
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187 | mask |= 1 << i; |
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188 | i++; |
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189 | } |
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190 | } |
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191 | } |
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192 | |
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193 | // TODO: fix this (at least include server channels, |
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194 | // do nit include confusing setups) |
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195 | if ( s.info.channels > SIO_NCHAN ) { |
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196 | s.info.channels = SIO_NCHAN; |
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197 | } |
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198 | |
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199 | for (i = 0; i < s.info.channels; i++) { |
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200 | cap->rchan[i] = i+1; |
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201 | cap->pchan[i] = i+1; |
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202 | } |
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203 | |
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204 | cap->rate[0] = s.info.rate; |
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205 | |
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206 | cap->nconf = 1; |
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207 | |
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208 | cap->confs[0].enc = mask; |
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209 | cap->confs[0].rchan = mask; |
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210 | cap->confs[0].pchan = mask; |
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211 | cap->confs[0].rate = 0x0001; |
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212 | |
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213 | return 1; |
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214 | } |
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215 | |
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216 | |
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217 | //ll |
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